Rock stratum hole leading pipe pile reinforcing device with automatic grouting function
By introducing an automatic grouting reinforcement device into the pre-drilled pipe piles in rock strata, the problem of untimely grouting after the pre-drilled pipe piles in rock strata was solved, the bearing capacity and stability of the pile foundation were improved, and the verticality and connection strength of the pipe piles were ensured.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- SHENZHEN YUJIA CONSTR ENG CO LTD
- Filing Date
- 2025-06-11
- Publication Date
- 2026-07-21
AI Technical Summary
Existing rock-derived bored pipe piles are difficult to reinforce with grout in a timely manner after being driven into the hole, resulting in deviations in the verticality of the pipe piles and affecting the stability and bearing capacity of the pile foundation.
A rock stratum borehole pipe pile reinforcement device with automatic grouting function was designed, including a pipe pile body, a grouting component and an installation component. By installing a hollow grouting pipe and a sealing plate at the bottom of the pipe pile, the grout is dispersed around the pipe pile using grouting holes and connectors. Combined with the installation bolts to fix the grouting component, the grouting is ensured to be evenly distributed, thereby improving the bearing capacity and stability of the pile foundation.
This technology enables timely grouting reinforcement during the driving of pipe piles, improving the bearing capacity and stability of the pile foundation, ensuring that the verticality of the pipe piles meets design requirements, and enhancing the connection strength between the pipe piles and the soil.
Smart Images
Figure CN224531657U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of pipe pile reinforcement technology, specifically a rock stratum pre-drilled pipe pile reinforcement device with automatic grouting function. Background Technology
[0002] Rock-derived bored pipe piles are a pile foundation construction technique used in the construction of pipe piles, specifically for geological conditions involving hard rock strata or hard interlayers. This technique involves drilling a pilot hole at a predetermined pile location before the actual pipe pile is driven into the pilot hole. This method primarily addresses the challenge of directly driving pipe piles into hard rock strata or areas with hard interlayers. After the pilot hole is completed, the pipe pile should be driven into it promptly. During the driving process, strict control of verticality deviation is crucial to ensure the verticality of the pipe pile meets design requirements. Currently, existing pipe piles often fail to undergo timely grouting reinforcement after being driven into the hole, resulting in a gap between the pile's diameter and the hole diameter after it reaches the bottom. This gap makes the pipe pile prone to deviation within the hole, thus affecting its verticality. Utility Model Content
[0003] The purpose of this invention is to provide a rock stratum borehole pile reinforcement device with automatic grouting function to solve the problems mentioned in the background art.
[0004] To achieve the above objectives, this utility model provides the following technical solution: a rock stratum borehole pipe pile reinforcement device with automatic grouting function, comprising a pipe pile body, a grouting component and an installation component;
[0005] Among them: the bottom of the pipe pile body is integrally cast with a pre-embedded seat;
[0006] The grouting assembly includes an installation plate installed at the bottom of the pre-embedded base. A hollow grouting pipe is fixedly installed at the bottom of the installation plate. A sealing plate is fixedly connected to the bottom of the hollow grouting pipe. Several grouting holes are opened around the surface of the hollow grouting pipe. A connector is threadedly connected to the center of the surface of the installation plate. A conveying pipe is provided inside the pipe pile body. The bottom end of the conveying pipe is threadedly connected to the top end of the connector.
[0007] The mounting assembly includes a pre-embedded base and a plurality of mounting holes circumferentially formed on the surface of the mounting plate. Mounting bolts are inserted into the interior of the mounting holes, and fixing nuts are threaded onto the surface of the mounting bolts.
[0008] As a preferred embodiment of this utility model: a threaded hole is provided in the middle of the mounting plate, the threaded hole is connected to the hollow grouting pipe, and the bottom of the connector is threadedly connected to the inside of the threaded hole.
[0009] As a preferred embodiment of this utility model: the top of the connector is provided with an external thread, and the bottom of the conveying pipe is rotatably installed with a connecting nut, the connecting nut being threaded onto the surface of the external thread.
[0010] As a preferred embodiment of this utility model: a plurality of reinforcing plates are fixedly installed on the bottom of the mounting plate, a grouting zone is formed between adjacent reinforcing plates, the grouting hole is located inside the grouting zone, and the bottom of the reinforcing plate is connected to the sealing plate.
[0011] As a preferred embodiment of this utility model, a sealing ring is fitted at the bottom of the connector.
[0012] As a preferred embodiment of this utility model, the conveying pipe is an explosion-proof metal flexible hose.
[0013] Compared with the prior art, the beneficial effects of this utility model are:
[0014] (1) An installation plate is installed at the bottom of the pre-embedded seat. A hollow grouting pipe is fixedly installed at the bottom of the installation plate. A sealing plate is installed at the bottom of the hollow grouting pipe. The sealing plate can prevent the grout from flowing out from the bottom. Several grouting holes are opened around the surface of the hollow grouting pipe. A connector is installed in the middle of the installation plate. A conveying pipe is threaded to the top of the connector. When the external grouting equipment injects grout into the hollow grouting pipe through the conveying pipe, the grout is dispersed to the surrounding area of the pipe pile body through the grouting holes. Grouting can effectively transfer the load of the pile foundation, improve the bearing capacity of the pile foundation, and make the pipe pile body and the soil form a more stable structure, which plays the role of reinforcing the pipe pile body and improving stability.
[0015] (2) Mounting holes are provided around the surface of the pre-embedded seat and the mounting plate. Mounting bolts are inserted inside the mounting holes. When the mounting plate corresponds to the mounting holes on the surface of the pre-embedded seat, the mounting bolts are inserted inside the mounting holes. The pre-embedded seat and the mounting plate are fixedly connected by tightening the fixing nuts on the surface of the mounting bolts, thereby fixing the grouting component to the bottom end of the pipe pile body.
[0016] (3) A threaded hole is provided in the middle of the mounting plate. The threaded hole is connected to the hollow grouting pipe. The bottom of the connector is threaded inside the threaded hole, so that the grout is injected into the hollow grouting pipe through the connector. The top of the connector is provided with an external thread. A connecting nut is rotatably installed at the bottom of the conveying pipe. The conveying pipe is threadedly connected to the connector through the connecting nut, which makes it easy to connect the conveying pipe and the connector before the pipe is submerged. Attached Figure Description
[0017] Figure 1 This is a schematic diagram of the overall structure of this utility model;
[0018] Figure 2 This is a schematic diagram of the grouting component structure of this utility model;
[0019] Figure 3 This is a schematic diagram of the installation component structure of this utility model;
[0020] Figure 4 A schematic diagram of the threaded hole structure of this utility model.
[0021] In the diagram: 1. Pipe pile body; 2. Embedded seat; 3. Grouting assembly; 31. Mounting plate; 32. Hollow grouting pipe; 33. Sealing plate; 34. Grouting hole; 35. Connector; 36. Delivery pipe; 4. Mounting assembly; 41. Mounting hole; 42. Mounting bolt; 43. Fixing nut; 5. Threaded hole; 6. External thread; 7. Connecting nut; 8. Reinforcing plate; 9. Grouting area; 10. Sealing ring. Detailed Implementation
[0022] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.
[0023] Please see Figures 1-4 A rock stratum borehole pipe pile reinforcement device with automatic grouting function includes: pipe pile body 1, grouting component 3 and installation component 4; the bottom of the pipe pile body 1 is integrally cast with a pre-embedded seat 2.
[0024] Please see Figure 1 , Figure 2 The grouting assembly 3 includes an installation plate 31 installed at the bottom of the pre-embedded base 2. A hollow grouting pipe 32 is fixedly installed at the bottom of the installation plate 31. A sealing plate 33 is fixedly connected to the bottom of the hollow grouting pipe 32. Several grouting holes 34 are opened around the surface of the hollow grouting pipe 32. A connector 35 is threadedly connected to the center of the surface of the installation plate 31. A conveying pipe 36 is provided inside the pipe pile body 1. The bottom end of the conveying pipe 36 is threadedly connected to the top end of the connector 35.
[0025] In practical use: An installation plate 31 is installed at the bottom of the pre-embedded base 2. A hollow grouting pipe 32 is fixedly installed at the bottom of the installation plate 31. A sealing plate 33 is installed at the bottom of the hollow grouting pipe 32 to prevent grout from flowing out from the bottom. Several grouting holes 34 are opened around the surface of the hollow grouting pipe 32. A connector 35 is installed in the middle of the installation plate 31. A conveying pipe 36 is threaded to the top of the connector 35. When the external grouting equipment injects grout into the hollow grouting pipe 32 through the conveying pipe 36, the grout is dispersed to the surrounding area of the pipe pile body 1 through the grouting holes 34. Grouting can effectively transfer the load of the pile foundation, improve the bearing capacity of the pile foundation, and form a more stable structure between the pipe pile body 1 and the soil, thereby strengthening the pipe pile body 1 and improving its stability.
[0026] Please see Figure 1 , Figure 3 The mounting component 4 includes a pre-embedded base 2 and a plurality of mounting holes 41 formed around the surface of the mounting plate 31. Mounting bolts 42 are inserted inside the mounting holes 41, and fixing nuts 43 are threaded onto the surface of the mounting bolts 42.
[0027] In practical use: mounting holes 41 are provided around the surface of the pre-embedded seat 2 and the mounting plate 31. Mounting bolts 42 are inserted into the inside of the mounting holes 41. When the mounting plate 31 corresponds to the mounting holes 41 on the surface of the pre-embedded seat 2, the mounting bolts 42 are inserted into the mounting holes 41. By tightening the fixing nuts 43 on the surface of the mounting bolts 42, the pre-embedded seat 2 and the mounting plate 31 are fixedly connected together, thereby fixing the grouting assembly 3 to the bottom end of the pipe pile body 1.
[0028] Please see Figure 4 The mounting plate 31 has a threaded hole 5 in the middle, which is connected to the hollow grouting pipe 32. The bottom of the connector 35 is threaded into the inside of the threaded hole 5, and the top of the connector 35 has an external thread 6. The bottom of the conveying pipe 36 is rotatably installed with a connecting nut 7, which is threaded onto the surface of the external thread 6.
[0029] In practical use: The mounting plate 31 has a threaded hole 5 in the middle, which is connected to the hollow grouting pipe 32. The bottom of the connector 35 is threaded into the threaded hole 5, so that the grout is injected into the hollow grouting pipe 32 through the connector 35. The top of the connector 35 has an external thread 6. The bottom of the conveying pipe 36 is rotatably installed with a connecting nut 7. The conveying pipe 36 is threadedly connected to the connector 35 through the connecting nut 7, which makes it easy to connect the conveying pipe 36 and the connector 35 before the pipe is submerged.
[0030] Please see Figure 2 Several reinforcing plates 8 are fixedly installed on the bottom of the mounting plate 31. A grouting zone 9 is formed between adjacent reinforcing plates 8. The grouting hole 34 is located inside the grouting zone 9. The bottom of the reinforcing plate 8 is connected to the sealing plate 33.
[0031] In practical use: Several reinforcing plates 8 are fixedly installed at the bottom of the mounting plate 31. The bottom of the reinforcing plates 8 is connected to the sealing plate 33. The reinforcing plates 8 strengthen the hollow grouting pipe 32. A grouting zone 9 is formed between the reinforcing plates 8. The grouting holes 34 allow the grout to flow into the grouting zone 9, so that the grout is evenly distributed around the bottom of the pipe pile body 1, so that the bottom of the pipe pile body 1 is evenly supported, thereby enhancing the stability of the reinforcement of the pipe pile body 1.
[0032] Please see Figure 4 A sealing ring 10 is fitted at the bottom of the connector 35.
[0033] In practical use: a sealing ring 10 is fitted at the bottom of the connector 35. The sealing ring 10 seals the connection between the connector 35 and the threaded hole 5 to prevent grout leakage from affecting the grouting process.
[0034] Please see Figure 2 , Figure 4 The delivery pipe 36 is an explosion-proof metal flexible hose.
[0035] In practical use: the delivery pipe 36 adopts an explosion-proof metal hose to meet the grouting pressure during the grouting process.
[0036] An installation plate 31 is installed at the bottom of the pre-embedded base 2. A hollow grouting pipe 32 is fixedly installed at the bottom of the installation plate 31. A sealing plate 33 is installed at the bottom of the hollow grouting pipe 32 to prevent grout from flowing out from the bottom. Several grouting holes 34 are opened around the surface of the hollow grouting pipe 32. A connector 35 is installed in the middle of the installation plate 31. A conveying pipe 36 is threaded to the top of the connector 35. When the external grouting equipment injects grout into the hollow grouting pipe 32 through the conveying pipe 36, the grout is dispersed to the surrounding area of the pipe pile body 1 through the grouting holes 34. Grouting can effectively transfer the load of the pile foundation, improve the bearing capacity of the pile foundation, and form a more stable structure between the pipe pile body 1 and the soil, thereby strengthening the pipe pile body 1 and improving its stability. A sealing ring 10 is fitted at the bottom of the connector 35 to seal the connection between the connector 35 and the threaded hole 5, preventing grout leakage from affecting the grouting.
[0037] The contents not described in detail in this description are existing technologies known to those skilled in the art. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.
Claims
1. A rock stratum pre-drilled pipe pile reinforcement device with automatic grouting function, characterized in that, include: Pipe pile body (1), the bottom of the pipe pile body (1) is integrally cast with a pre-embedded seat (2); Grouting assembly (3), the grouting assembly (3) includes an installation plate (31) installed at the bottom of the pre-embedded seat (2), a hollow grouting pipe (32) is fixedly installed at the bottom of the installation plate (31), a sealing plate (33) is fixedly connected at the bottom of the hollow grouting pipe (32), a plurality of grouting holes (34) are opened around the surface of the hollow grouting pipe (32), a connector (35) is threadedly connected to the center of the surface of the installation plate (31), a conveying pipe (36) is provided inside the pipe pile body (1), and the bottom end of the conveying pipe (36) is threadedly connected to the top end of the connector (35); The mounting assembly (4) includes a pre-embedded base (2) and a plurality of mounting holes (41) circumferentially formed on the surface of the mounting plate (31). Mounting bolts (42) are inserted inside the mounting holes (41), and fixing nuts (43) are threaded onto the surface of the mounting bolts (42).
2. The rock stratum pre-drilled pipe pile reinforcement device with automatic grouting function according to claim 1, characterized in that: The mounting plate (31) has a threaded hole (5) in the middle, which is connected to the hollow grouting pipe (32). The bottom of the connector (35) is threaded into the threaded hole (5).
3. The rock stratum pre-drilled pipe pile reinforcement device with automatic grouting function according to claim 1, characterized in that: The top of the connector (35) is provided with an external thread (6), and the bottom of the conveying pipe (36) is rotatably installed with a connecting nut (7), which is threaded onto the surface of the external thread (6).
4. The rock stratum pre-drilled pipe pile reinforcement device with automatic grouting function according to claim 1, characterized in that: The bottom of the mounting plate (31) is fixedly installed with several reinforcing plates (8), and a grouting area (9) is formed between adjacent reinforcing plates (8). The grouting hole (34) is located inside the grouting area (9), and the bottom of the reinforcing plate (8) is connected to the sealing plate (33).
5. A rock stratum pre-drilled pipe pile reinforcement device with automatic grouting function according to claim 1, characterized in that: A sealing ring (10) is fitted at the bottom of the connector (35).
6. A rock stratum pre-drilled pipe pile reinforcement device with automatic grouting function according to claim 1, characterized in that: The delivery pipe (36) is an explosion-proof metal flexible hose.